Hardware prototype for the OTTO Synthesizer
Use Kicad to open the project
The main features are (for now):
- 50 key button matrix
- 4 clickable color coded encoders
- 1W Audio amplifier for the internal speaker
- Battery management and charging circuit for the lipo/li-ion batteries and a led battery meter
- Gpio breakout to allow to position the Raspberry rotated 90 degrees to access the USB ports and to easely use both the LCD screen and the audio card.
